Apparatus and methods for placing an additive fluid into a refrigerant circuit
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United States of America Patent
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Apr 20, 2004
Issued Date -
N/A
app pub date -
Jul 8, 2002
filing date -
Mar 8, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A supply canister is partially filled with a refrigerant circuit additive liquid and is partially evacuated. Additive liquid from the canister may be placed into the refrigerant circuit of an air conditioning system by (1) connecting the canister to the circuit after it has been emptied and a vacuum pressure created therein, (2) connecting the canister to the refrigerant circuit suction line during system operation, or (3) connecting the canister to the suction line with the system off, to thereby force refrigerant from the circuit into the canister, and then starting the system to cause the vacuum pressure in the suction line to draw the contents of the canister into the refrigerant circuit.
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